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Historically a nation of immigrants, the United States is home to nearly 41 million immigrants, who represent 13 percent of the total population and play a key role in the economic, civic, and cultural life of the country. The research collected here covers many facets of immigration to the United States, by the numbers and how immigrants fare in the country's classrooms and workplaces, the policies and regulations that shape the admission of new immigrants, the enforcement programs and polices in place at U.S. borders and within the interior, and integration policies and efforts taking place in local communities, in states, and at the federal level.

An estimated 41.3 million immigrants lived in the United States in 2013, about 13 percent of the total U.S. population, constituting the world's largest foreign-born population. This Spotlight from MPI's Jie Zong and Jeanne Batalova offers the most current and sought-after data on immigrants in the United States—including origin, educational attainment, the unauthorized, deportations, and more—in one easy-to-use resource.

Normalization of relations between Cuba and the United States will have a significant impact on U.S. immigration policy and future Cuban migration to the United States. This Policy Beat explores the U.S.-Cuba migration relationship, as fear of changes to the "wet-foot, dry-foot" policy has spurred hundreds of new boat arrivals in recent months.

2013 proved a year of significant highs and lows in the quest to reform the U.S. immigration system, with enough political and legislative twists to keep even veteran observers of Congress guessing and leave politicians and pundits confused about the prospects for enacting reform in 2014.

More than 1 million people became lawful permanent residents (LPRs) of the United States in 2012, with family-sponsored immigrants accounting for two-thirds of those gaining a green card. This Spotlight examines federal statistics on foreign nationals who gained LPR status during 2012.

With the state of Alabama's recent legal settlement ensuring that key portions of its highly contested immigration enforcement law will never take effect, an important chapter of heightened activism by states in immigration enforcement has drawn to a near close. This article explores Alabama's decision, which traces its roots to the Supreme Court's 2012 ruling in Arizona v. United States, as well as the Infosys civil settlement with federal prosecutors over its use of foreign workers, new refugee admission numbers, extension of Temporary Protected Status for Somalis, and more.

About 757,000 immigrants took U.S. citizenship in 2012, a 9 percent increase from the year before. As of 2012, 46 percent of the nation’s 40.8 million immigrants were naturalized Americans. This article examines the latest naturalization data available for the United States, including historical trends, data by country of origin and state of residence, as well as socioeconomic characteristics of the 18.7 million naturalized U.S. citizens residing in the United States in 2012.

The event discussion, which touched on the intersection of race and immigration, focused on the demographics of Black immigrants (both African and Caribbean) in the United States and their children, their educational success, and the implications of the recently released volume’s findings for research and public policy.

The winners of the Migration Policy Institute's 2012 E Pluribus Unum Prizes, honoring exceptional immigrant integration initiatives in the United States, discussed their work during a plenary luncheon on September 24, 2012 at the National Immigrant Integration Conference held in Baltimore, MD.

Join MPI as U.S. Citizenship and Immigration Services Director Alejandro Mayorkas discusses the application process and policies that the agency has announced to implement the administration’s deferred action program.

MPI is pleased to host a discussion with experts from both KIND and the Women’s Refugee Commission, focusing on the causes of the increase in unaccompanied minor migrants, the situation these minors face once detained or apprehended, and the challenges confronting both nongovernmental organizations trying to provide aid and the U.S. government agencies responsible for processing minors through the system.

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With the prospects for immigration reform greater than they have been in more than a decade and the U.S. economy slowly shrugging off the effects of the recession, the United States may be on the cusp of historic changes that make the immigration system a more effective tool for innovation, economic growth and the competitiveness of its firms—large and small.

This discussion covers some of the most difficult issues that must be addressed if the United States is to reform its immigration system in ways that work not only for today’s reality but tomorrow’s future.

The event discussion, which touched on the intersection of race and immigration, focused on the demographics of Black immigrants (both African and Caribbean) in the United States and their children, their educational success, and the implications of the recently released volume’s findings for research and public policy.

How the anti-immigrant political movement and rancorous debates surrounding immigration will impact countries’ ability to build strong economies and vibrant, diverse societies is yet to be determined. This discussion focuses on the factors and players that contribute to this environment, an analysis on the current situation in both Europe and the United States, and a discussion on its implications for community cohesion and national identity in European countries and the United States.

The winners of the Migration Policy Institute's 2013 E Pluribus Unum Prizes, honoring exceptional immigrant integration initiatives in the United States, discuss their work at an award ceremony on December 4, 2013 in Washington, DC.

This report analyzes mutual recognition agreements (MRAs) between countries, which allow professionals to transfer their skills and experiences across borders more effectively. The report, part of a series on the recognition of foreign credentials, evaluates existing MRAs and discusses the prospects for cooperation between the United States and the European Union.

This edited volume showcases approaches toward border management in Europe, Central America, and North America, and reflects on the challenges that countries in these regions face in managing their borders. The book brings together perspectives from both sides of the Atlantic on what border security means in practice, the challenges that continue to evade policymakers, and what policies have been the most (and least) successful in achieving “secure” borders.

This report profiles the population of Dual Language Learner children in the United States, who represent nearly one-third of all U.S. children under age 6, outlining school readiness and patterns of achievement. It evaluates the research on early care and education approaches that have been shown to support higher levels of language and literacy development for this population.

The 10th annual Immigration Law and Policy Conference featured keynotes by U.S. Senator John McCain (R-AZ) and former Mississippi Governor Haley Barbour, as well as panel discussions covering a range of key immigration topics.

This briefing at the State Capitol in Honolulu, organized in conjunction with the University of Hawaii at Manoa, marked the formal release of a Migration Policy Institute report that presents key demographic and socioeconomic information about the Mexican-origin population in Hawai’i.

The Chair of the Global Forum on Migration and Development, along with the Special Advisor to the UN Special Representative for International Migration discuss what is expected from The UN High-Level Dialogue on Migration and Development in October 2013 and what impact it may have on the Global Forum on Migration and Development.

In the Spotlight

As many as 5.2 million unauthorized immigrants could gain relief under new and expanded deferred action programs that President Obama unveiled in November 2014. Check out our U.S. and state breakdowns of the populations that could benefit from the existing Deferred Action for Childhood Arrivals (DACA) program or new deferred action program for certain parents of U.S. citizens or legal permanent residents.

Want the latest estimates and characteristics of unauthorized immigrants in the United States, including those potentially eligible for relief from deportation? Use this innovative data tool to get population estimates and much more—including countries of origin, recency of arrival, educational enrollment and attainment, industries of employment, incomes, English proficiency, and health care coverage—at the national level, by state, and for top counties.